TPS54334
- Two 128mΩ/84mΩ MOSFETs for 3A Continuous
Output Current - Power Good
- Low 2 µA Shutdown Quiescent Current
- 0.8 V Internal Voltage Reference with ±1.5%
Accuracy Over Temperature - Fixed-Frequency Current Mode Control
- Pulse Skipping Boosts Efficiency at Light Loads
- Overcurrent Protection for Both MOSFETs with
Hiccup Mode for Severe Fault Conditions - Thermal and Overvoltage Transient Protection
- Available in Easy-to-Use 8-Pin SOIC
PowerPAD™ and 10-Pin SON - Monotonic Start-Up into Pre-biased Outputs
The TPS54334 is a 28-V, 3-A, low quiescent supply current (IQ), synchronous monolithic buck converter with integrated MOSFETs.
The TPS54334 enables small designs by integrating the MOSFETs and implementing current mode control to reduce external component count.
Efficiency is maximized through the integrated 128mΩ/84mΩ MOSFETs, low quiescent supply current and pulse skipping at light loads. Using the enable pin, shutdown supply current is reduced to 2 µA by entering a shutdown mode.
The TPS54334 provides accurate regulation for a variety of loads with an accurate 1.5% voltage reference over temperature.
Cycle by cycle current limiting on the high-side fet protects the TPS54334 in overload situations and is enhanced by a low-side sourcing current limit which prevents current runaway. There is also a low-side sinking current limit which turns off the low-side MOSFET to prevent excessive reverse current. Hiccup protection will be triggered if the overcurrent condition has persisted for longer than the preset time. Thermal hiccup protection disables the part when die temperature exceeds thermal shutdown temperature and enables the part again after the built-in thermal hiccup time.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | TPS54334 4.2-V to 28-V Input Voltage, 3-A Output Current Synchronous Step-Down Voltage Converter 数据表 (Rev. A) | PDF | HTML | 2016-2-10 | ||
| 应用手册 | Measure Power Stage Gain and Slope Compensation in PCM (Peak Current Mode) BUCK (Rev. A) | PDF | HTML | 2019-4-1 | |||
| 应用手册 | How to Estimate Overshoot and Undershoot of Load Transients of a DC/DC Regulator | 2017-12-20 | ||||
| 应用手册 | Using TPS54335A to Create an Inverting Power Supply (Rev. A) | 2017-7-19 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
TPS54334EVM-722 — TPS54334EVM-722 3A 稳压器评估模块
TPS54334 是一款具有集成式 MOSFET 的 28V、3A、低静态电源电流 (IQ) 同步单片降压转换器。TPS54334 通过集成 MOSFET 并实施电流模式控制来减少外部组件数量，从而实现小型化设计。
该器件凭借集成的 128mΩ/84mΩ MOSFET、低静态电源电流以及轻载条件下的脉冲跳跃，实现出色效率。通过使用使能引脚进入关断模式，关断电流可减少至 2μA
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| VSON (DRC) | 10 | Ultra Librarian |
| HSOIC (DDA) | 8 | Ultra Librarian |
订购和质量
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